/Engine/Source/Developer/Localization/Public/Serialization/JsonInternationalizationArchiveSerializer.h
Goes through the structured, hierarchy based, archive data and does a non-culture specific sort on namespaces and default text.
static void SortStructuredData ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FStructuredArchiveEntry](API\Developer\Localization\Serialization\FStructuredArchiveEntry) > InElement )